Rim-collapsing tool



May 6, 1930. J. G. SWAIN ET AL 1,757,752

RIM COLLAPSING TOOL Filed Nov. 1, 1926 2 Sheets-Sheet 1 FIG. 3

M17870. W. MITCHELL A TTORNEYJ.

y 1930- J. G; sw Am ET Ag 1,757,752

RIM GOLLAPSING TOOL Filed Nov. 1, 1926 2 Sheets-Sheet 2.

INVENTOR. (/OSEF/t. C. SW/Y/N y MIR/0M wM/rc/mu.

. Y Y ATTORNEYS.

Pa ten ted May 6, 1930 v 7 if JOSEPH G. swAmnNnMAnion-w. MITCH ELL, orAKRON, OHIO, nssrenons 'ro THE FIRESTONE STEEL rnonnc'rs coivirnnnorAKnom oHIo," aconronn'rron on OHIO 'App1ication filed.v iilovenibrerThis invention relates to tools for collaps-f ing split rims used formounting pneumatlc tires on'wheels. 1 j

The general'purpose of the invention sto provide apparatus forcollapsing tire rims, to reduce their circumference when mounting orremoving a tire therefrom, and for accomplishing this operation in aneasy, and effective manner with a ininimumnumber of steps and withoutunduly distorting the rims. Tools have been provided heretofore,.toperform these functions, but these have not been entirely satisfactoryin use. 7 7

One object, therefore, is to provide atool for drawing one end of thesplit rim ra'd ally inward and then circumferentially past the othertoreduce the circumference of the rim without swinging said end throughthe arc of a circle. Another object-isjto provide a rim contracting toolso designed as to resist I movement thereof by the expandingforce of therim. 7 7 7 The foregoing and other objects areobtained by the apparatusillustratedlinthe accompanying drawings and described below. It is to beunderstood that the invention 1S not limited to the particularformthereof shown and described.

Of the acompanying drawings: 7 Figure-1 is a sectional elevation of atire rim illustrating means for cooperatingwith the tool embodying theinvention, r

' Figure 2 is a plan thereof as viewed the interior of'the' rim; 7

Figure 3 is anelevation illustrating the tool as first positioned on therim;

Figure leis an end elevation of the tool and one end of the rim aspositioned in Fig-.

ure 3' r o 7 Fighre 5 is an elevation illustrating the parts at the endof the first operation; Figure 6 is an elevation illustrating the partsat the end of the second operation; and

Figure 7 is a plan thereof as viewed from the interior of the rim. 7 7

Referring more particularly toithe drawings, 10 and 11 Yindicatethe twoends ofa split, annular, contractile tire rim such as used for mountingtires on automobile wheels. A reinforcing eye 12 is swaged through afrom 7 nI'M-COIQILAPSI G Tool.

1,1926. Serial m3. 4 ,414.

hole in, the rim'end 10 at a point removed from the split 13 to providea reinforced aperture through which to pass thevalve stein (not shown)of an inner tube; An eXten-' sion of eye 12 forms a broad hook 14, the

function ofwhich will appear later. "Also riveted on rim end 10 adjacentsplit 13 is a lug 15 havingra cylindrical head directed radially inwardof the rim. A channel shaped member or latch 16 is riveted to rim end11, a portion of said member' overlapping split 13 and being providedwith, an

aperture l7 throughwhich lug 15 may pass tomaintain the rim ends inalignment and [prevent theirfspreading when the rim is in .use. Thesides of channel member 16' are "provided near one end with apertures18, 18

and through their mid-portions with notches 19,119. 77 The latter serveas a driving means for the rimfto prevent its rotation relative to'thewheel (not shown), when a bolt (not shown )iis passed through the follyof the wheeland through said notch-es; l

I Thetool '20 comprises a handle portion 21 Y and a-bifurcated'y'okeportion consisting of arms 22, 22 havingtheir ends rounded to providecanrfaces 23, 23.. Arms 22, 22 are provided near their rounded endswithlugs 24:, 24: adapted toenter apertures 18, 18 when arms22,22a'resnapped about channel member 16 as shown in Figure 3. A. bail 25is swingably'mounted through holes bored at 2'6 nearthe'otherends ofarms 22, '22 and is ofsuch a" lengththat its'outer end may be engageable'over hook 14 when tool 20 is in the positions iillustrated in Figures 5and 6.

*In operation,: tool 20 is positioned as in Figure 3'andhandle121 swungdownwardly to draw rim end 11 radially inward of rim end 10 anddisengage lug 15 from aperture 7-, rim end 11 just clearing rim end 10as shown inFigure 5. Thus thetool acts as a lever of the first class,being pivoted about lugs 24, 24 WhIllGCfllD faces 23, 23 ride againstrim-end 10. The end of bail '25 is engaged under hook 14 as illustratedin Figure 5 and handle 21 swung back to its original position,

the rim (Figures 6 and 'Z)..--.During this latter operation, thetoolacts asalever of the second class, being pivoted about point 26. Sincetool swings past its dead center line, it will remain of its own accordin position against the rim. v

To return the rim ends to their normal position, handle .21 is swungdownwardly, bail released from hook 14 and the handle slowly returnedtoposition flat against the rimfthe rim ends againassuming the-positionshown in Figure 3. 7 During the latter i" motion of the tool, cam-faces23, 28 slide against the inner face of the rim end-10 andhave a brakingaction, whereby the rim tQOl is prevented from violently snapping backagainst therim. Tool 20 is then removed from the rim by spreading arms22, 22 and disengaging lugs 24, 24 r V A simple tool andjcooperatingmeans on therim are thus provided for effectively collapsing' tire rimsA Modifications of the above described in vention may be resorted towithout'departing from the spirit thereof or the'scope of the appendedclaims.

1. Abifurcated tool for collapsing and expanding transversely splitrims, said tool comprising a handle portion, spaced arm portions eachhavingracam. face on itsrendpa. pivot lug provided on each of the armportions adjacent said end and adapted tobe positioned in apertures inone end of atirec rim, whereby said tool may be operable as a lever ofthe first class toadraw said rim end radially inwardlyof the other assaid handle portion is swung inwardly and said cam faces are urgedagainst said other rim end, and a bail pivoted on said arm. portions ata'point remote fromfsaid cam faces, the free end of of A V rection.

'nse

said tool on one side of the pivot, and a rim contracting bail pivotedon the tool on the other side of the pivot and engageable with the otherrim end. a

4. A tool for collapsing split rims, com prising a handle portion, abifurcatedyoke portion, and a bail pivotedt-o said yoke portion, thelatter portion including arms having cam faces on their ends and pivotlugs adjacent said ends between the' bail and the cams. .l'f' 5. Abifurcated lever for, collapsingsplit rims,-- said lever comprisingspaced arms having pivot lugs thereon, cam faces on the ends {of saidarms on one side of the pivot lugs,

endof said rim first, radiallyinwardly to split the rim as; the lever isthrown. in one direction, andmeans for drawing said end of v therimcircumferentially ,past the other end of the rim to reduce thecircumference thereas the lever is thrownin the opposite d1-v .iosnriia. SWAIN. Y a MARION w. MITCHELL.

said bail beings engageable "with said other I rim end, where y the toolmay befoperable, as a lever of the secondclass tovdraw' the other rimend circumferentially past '2 the first named rim end to, reduce thesaid rim. c A y 2. A tool for collapsing and expanding transverselysplit rims, said tool comprising circumference of A a an arm portion, apivot lug providedon the arm portion adjacent-an end thereof, said armportion beingformed'with a cam face on the 'end thereof extendingbeyond; said pivot lug, said pivot lug being adapted to be positionedinan aperture formed inone rim end and said cam face being engageablewith the other rim end whereby said tool may be its operable as, a leverto draw the face ofsaid rim ends radially inwardly of the other of saidrim ends, and'means for drawing the last-named rim end circumferentiallypast the first-named rim end to reducethe circumference of said rim. I

3 A tool for collapsing transversely split V rims, said tool beingadapted to pivot onone rim end, arim splitting cam, onthe end of

